Initial import attempt, just to play with. Many things disabled/removed

ui/cc/stubs/Region.h

+#ifndef UI_CC_STUBS_REGION_H_
+#define UI_CC_STUBS_REGION_H_
+
+#include <wtf/Vector.h>
+#include "IntRect.h"
+
+namespace WebCore {
+class IntPoint;
+
+class Region {
+public:
+    Region() { }
+    Region(const IntRect&) { }
+    Region(const Region&) { }
+    IntRect bounds() const { return IntRect(); }
+    Vector<IntRect> rects() const { return Vector<IntRect>(); }
+    void unite(IntRect) { }
+    void unite(Region) { }
+    void subtract(Region) { }
+    bool isEmpty() const { return true; }
+    bool contains(const IntPoint&) const { return false; }
+    bool contains(const Region&) const { return false; }
+
+};
+
+static Region subtract(const Region&, const Region&) { return Region(); }
+static Region intersect(const Region&, const Region&) { return Region(); }
+
+bool operator==(const Region&, const Region&) { return true; }
+
+}
+
+#endif  // UI_CC_STUBS_REGION_H_